Nuclear reactions with 14 MeV neutrons and bremsstrahlungs in giant dipole resonance (GDR) region using small accelerators

Thiep, Tran Duc; Do, Nguyen Van; An, Truong Thi; Sơn, Nguyễn Ngọc

doi:10.1016/s0375-9474(03)01429-5

Cited by 42 publications

(18 citation statements)

References 3 publications

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“…We performed fits of model parameters taking in consideration the sets shown in Fig. 36, reaching a good agreement in the rising part of the cross section, in particular with the most recent experiment of Tran Due Thiep et al [181]. Even though the agreement with the set of Fessler et al [163] in the decreasing part of the cross section is far from optimal, it is in a much better qualitative agreement with data than ENDF/B-VIII.0, for which the (n,p) cross section continues to increase after 16 MeV and beyond 20 MeV.…”

Section: Fig 25 (Color Online) Inelastic Gamma Cross Section Measurem...mentioning

confidence: 61%

“…Even though Schmidt's data is generally consistent with the two other sets, there are discrepancies, especially at more forward angles, as can be seen in the 30 degree panel in Fig. 41 [163,177,181,182,186,189,[191][192][193][194][195].…”

Section: Neutron Double-differential Spectramentioning

confidence: 75%

“…In addition to these sets, the new (n,p) data considered in this evaluation were Refs. [180][181][182][183][184][185][186]. Older sets or data sets with clear conflicting points were excluded from fits and tuning.…”

Section: Fig 25 (Color Online) Inelastic Gamma Cross Section Measurem...mentioning

confidence: 99%

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Newly Evaluated Neutron Reaction Data on Chromium Isotopes

Nobre,

Pigni,

Brown

et al. 2021

Preprint

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Neutron reaction data for the set of major chromium isotopes were reevaluated from the thermal energy range up to 20 MeV. In the low energy region, updates to the thermal values together with an improved R-matrix analysis of the resonance parameters characterizing the cluster of large s-wave resonances for 50,53 Cr isotopes were performed. In the intermediate and high energy range up to 20 MeV, the evaluation methodology used statistical nuclear reaction models implemented in the EMPIRE code within the Hauser-Feshbach framework to evaluate the reaction cross sections and angular distributions. Exceptionally, experimental data were used to evaluate relevant cross sections above the resonance region up to 5 MeV in the major 52 Cr isotope. Evaluations were benchmarked with Monte Carlo simulations of a small suite of critical assemblies highly sensitive to Chromium data, and with the Oktavian shielding benchmark to judge deep penetration performance with a 14-MeV D-T neutron source. A significant improvement in performance is demonstrated compared to existing evaluations.

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Section: Fig 25 (Color Online) Inelastic Gamma Cross Section Measurem...mentioning

confidence: 61%

Section: Neutron Double-differential Spectramentioning

confidence: 75%

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Newly Evaluated Neutron Reaction Data on Chromium Isotopes

Nobre,

Pigni,

Brown

et al. 2021

Preprint

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“…In refs. [15,16] the authors by studying the IRs in photonuclear reaction of different isotopes led to conclusion that the IR decreases with the increase of neutron number. The dependence of IR on masses of isotones and isotopes is called the effect on nucleon configuration.…”

Section: Introductionmentioning

confidence: 99%

“…The excitation energy, momentum transfer effects can be found in refs. [15,16] and [20]. M. Huber et al [21] and J. J. Carroll et al [22] show the important role of intermediate state structure on the mechanism of population of the isomeric and ground states.…”

Section: Introductionmentioning

confidence: 99%

The nuclear channel effect in the isomeric ratio of the reaction products

Tran¹,

Truong²,

Bui³

et al. 2019

Nucl. Sci. and Tech.

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This work presents the experimental study of the isomeric ratio of 115mCd to 115gCd produced in 116Cd(γ, n)115m,gCd photonuclear reaction and 116Cd(n, γ)115m,gCd neutron capture reaction by thermal, epithermal and mixed thermal and epithermal neutrons. The investigated samples were natural cadmium irradiated at the bremsstrahlung photon flux, in the neutron source constructed at the electron accelerator Microtron MT-25 of the Flerov Laboratory of Nuclear Reaction, Joint Institute for Nuclear Research, Dubna, Russia. The results were analyzed, discussed, compared and combined with those of other authors in the existing literature to examine the role of the nuclear channel effect in the isomeric ratio and provide the nuclear data for theoretical model interpretation of nuclear reactions and applied research.

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